Vivarium



FIG. 1 is a perspective view of a vivarium showing my new design;

FIG. 2 is a left side view of the vivarium;

FIG. 3 is a front elevational view of the vivarium;

FIG. 4 is a right side view of the vivarium;

FIG. 5 is a rear elevational view of the vivarium;

FIG. 6 is a top plan view of the vivarium; and,

FIG. 7 is a bottom plan view of the vivarium.

The portions of the drawings shown in broken lines form no part of the claimed design. 

CLAIM The ornamental design for a vivarium, as shown and described. 